With or without contact,Measuring range with contact: 6-25,000RPM, without : 6-99,999RPM, Measuring gap: 50-800mm, Rotation speed: 1 pulse/lap, Length: 0.2362m/lap, LCD screen
With and without contact, Measuring range: 6-25,000 RPM with contact and 6-99,999 without, Circumference of measuring wheel: 6", Rotation speed: 60 pulses/lap, Length: 0.00254m/pulse, LCD screen
With and without contact, Measuring range: 6-25,000 RPM with contact and 6-99,999 without, Circumference of measuring wheel: 6", Rotation speed: 8 pulses/lap, Length: 0.01905m/pulse, LED screen